Google recently announced the launch of their Site Performance feature as an addition to their webmaster tools. The new tool shows you information about the speed of your site and gives suggestions for making it faster. We are always conscious of page speed as we build sites; users won't stick around to view your content if they have to wait for your pages to load. Not only that, but faster sites engage users, leading to better conversion rates for things such as purchases or email signups.
The Performance Overview shows the average time it takes for your site pages to load and rates your site against average speeds across the Web. You can delve into specific pages to see what their exact load time is, and see Google’s suggestions for improvements. All you need is a Google account to set your site up to use the webmaster tools. It’s a great collection of tools for developers, webmasters and anyone with a website.
You can set up a Google account here.